This is the 17257th most frequent Polish word.
zakonne
"Zakonne" means "monastic" or "related to a religious order."
Here, 'zakonne' functions as an adjective describing 'zgromadzenia' (congregation) to indicate its religious nature.
Maria wstąpiła do zakonnego zgromadzenia.
Maria joined a religious congregation.
The term 'zakonne' here describes 'życie' (life), specifying that the life mentioned is within the context of a religious order.
Zakonne życie wymaga dużej dyscypliny.
Religious life requires a lot of discipline.
In this sentence, 'zakonne' acts as an adjective describing 'szaty' (robes), explaining their connection to religious orders or practices.